m6502-emulator-rust

A rust based m6502 emulator for following along with Ben Eater's "Build a 65c02-based computer from scratch"

How to use

You can make your own programs by updating the programs/default.txt file or making a new file in programs. Later, you can run the program by typing run <program_name> (run -df for running the default program) in the CLI.

Important addresses

100-1FF -   Stack
6000-6001 - Ports A and B
6002 -      Print Port: Prints whatever is stored to this port when changed
8000-FFFF - EEPROM: where the program will be saved.

Important notes for assembly programs

When creating a new program note that it is very important to set the .org to $8000. This will set the location of the program to the start of the EEPROM. When trying to store to a memory module which cannot be written to (EEPROM for example) the programm will crash, informing the user of the error. You can store whatever you want in address $6002 to print it to the console when running.

Advanced CLI features

You can configure your CPU's instruction time by typing configure -It <speed_in_ms>. This can be useful for running infinite programs like fibonacci. More configurations to come!